Interesting diagram. I could fall into the primary category (not responsive to aspirin) but could also be secondary, as I have about half of the conditions on that list!!
I see idiopathic is under primary but I think that could actually belong in both columns. It could be an undiagnosed genetic cause or an undiagnosed secondary cause. Hence the idiopathic! :) It is a simple way for new people to get a better understanding of the difference between the two and I know that is a common confusion for some.
Thank you for your hard work Mads. We appreciate it very much.